/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.kie.api.task;

import org.kie.api.task.model.Task;

public interface TaskContext {

    /**
     * Returns currently configured UserGroupCallback.
     * @return returns user group callback
     */
    UserGroupCallback getUserGroupCallback();

    /**
     * Loads task (given as argument) variables - both input and output if exists.
     * In case variables are already set they are not reread from data store.
     * @param task task which should have variables (both input and output) set
     * @return returns task with variables set
     */
    Task loadTaskVariables(Task task);
    
    /**
     * Returns user id who performs the operation
     * @return user id of the caller
     */
    String getUserId();
}
